What could be the reasons for table failures?

Incorrect constraints (constraints) in cells or header/footer sections.
Issues with cell reuse (non-unique reuseIdentifier or incorrect caching).
Changing the data source (array) without proper calls to reloadData(), insertRows(at:with:), deleteRows(at:with:), reloadRows(at:with:).
Performing data updates and UI table updates not on the main thread.
Complex view hierarchy inside a cell causing rendering or height calculation issues.
Incorrect implementation of UITableViewDataSource and UITableViewDelegate protocol methods.
Problems with calculating dynamic cell height (automaticDimension) when using Auto Layout.
Memory leaks in cells or the controller containing the table.
Incorrect handling of activity indicators or other built-in table elements.
Using deprecated methods or APIs.
Navigation or modal presentation issues affecting table state.
Errors when working with UITapGestureRecognizer or other gesture handlers over cells or the table.
Incorrect handling of nil values in data used to configure cells.
Conflicts with other views or controllers on the screen.